Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4791089 | Zirconia-titania-silica tergels and their use as catalyst supports | William Kirch | 1988-12-13 | $10,261,000 |
| 4634744 | Method of catalyst deactivation | Yu-Tang Hwang, Lloyd Pebsworth, Raymond E. Hoff | 1987-01-06 | |
| 4590246 | Method of polymerizing olefins | William Kirch | 1986-05-20 | |
| 4567243 | Polymerization method | Thomas J. Pullukat, Yu-Tang Hwang | 1986-01-28 | |
| 4524141 | Polymerization catalysts and methods | Thomas J. Pullukat, Yu-Tang Hwang | 1985-06-18 | |
| RE31761 | Method of preparing zirconia-silica xerogels, the xerogels, and xerogel catalysts | William Kirch | 1984-12-11 | |
| 4476243 | Olefin polymerization catalyst and catalyst support | — | 1984-10-09 | |
| 4458058 | Polymerization method | — | 1984-07-03 | |
| 4378304 | Catalyst and methods | — | 1983-03-29 | |
| 4335016 | Catalyst and method | — | 1982-06-15 | |
| 4279780 | Method of preparing catalyst supports | — | 1981-07-21 | |
| 4246137 | Method of preparing zirconia-silica xerogels, the xerogels, and xerogel catalysts | William Kirch | 1981-01-20 |